Anybody have any success using the ipf_profile feature in Chris's patch?
Running 0.2.5 (Windows compile), I get "Singular matrix in MInvers" whenever I
try to use ipf_profile (type 1 or 2). The simulation completes OK, then parse
exits with the aforementioned error.
Example (sligtly modified from particleFalls.pov):

particle_system {
        wind < 0, 0, 0>
        iterations 250
        time 200
        environment object {Floor}
        threshold 1.5
                                
        particle_emitter {
                location < 0, 4.1, 0>
                radius 0.3
                lifespan 1000
                rate 5
                direction < 0, 0.2, 0>
                ipf_profile {
                    2, .005,
                    .5, 2
                }
        }

        texture {
                pigment {color rgb < 0.7, 0.75, 1>}
        }
}

-- 
Margus Ramst

Personal e-mail: mar### [at] peakeduee
TAG (Team Assistance Group) e-mail: mar### [at] tagpovrayorg

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